feud

1. A state of long-standing mutual hostility.

   You couldn't call it a feud exactly, but there had always been a chill between Phil Mickelson and Tiger Woods.

2. A staged rivalry between wrestlers.
3. A combination of kindred to avenge injuries or affronts, done or offered to any of their blood, on the offender and all his race.

1. To carry on a feud.

   The two men began to feud after one of them got a job promotion and the other thought he was more qualified.

noun

An estate granted to a vassal by a feudal lord in exchange for service.